Racelogic VBOX II User Manual page 24

06 - VBOX 20SL Dual Antenna Placement
Whilst installation and use of the VB20SL is intended to be fast and simple, careful attention must be paid to placement
of the two antennas.
Note: It is essential that the separation of the two antennas is exactly the same as the value set in the unit's
configuration screen. If the separation is incorrect, data may not be given or may be inaccurate. The measured
distance between the antennas should be the straight-line distance between the antennas regardless of the
mounting angle. It is not the 2D distance between the antennas as viewed from above.
https://en.racelogic.support//Product_Info/VBOX_Data_Loggers/VBOX_II_Range/VBOX_II_User_Guide/06_-
_VBOX_20SL_Dual_Antenna_Placement
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